Rhizome of ginger is like the roots of other plants that grows underground. Despite this fact ginger is a stem and not a root. Justify.

$\rightarrow$ Adventitious roots are produced from lower surface of node. It is not root because root does not possess nodes or internodes.

$\rightarrow$ Moreover rhizome does not work as root like fixation and absorption, it does food storage. These all characteristics show that Ginger is a stem but not root.